Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8015707 | Materials Letters | 2018 | 4 Pages |
Abstract
A novel porous and magnetic Fe/FeNX composite fibers for Cr (VI) ions adsorbent were prepared by electro-blown spinning technology coupled with high temperature nitrided way. The X-ray Diffraction (XRD) and Differential Scanning Calorimetry-Thermo Gravimetric Analyzer (DSC-TGA) revealed metallic iron and FeNX mainly existed in these fibers. Furthermore, the effect of spinning voltage, air pressure and solution concentration on the morphology for the as-spun fibers were investigated. Meanwhile, the effect of calcination temperature on morphology and structure, crystalline property and hysteresis loop also were discussed. The obtained fibers had a uniform morphology and structure, and a high specific surface area (151â¯m2â¯gâ1) during the calcination temperature of 800â¯Â°C. The Fe/FeNX fibers showed effective sorption affinity for Cr (VI) ions, achieving maximum adsorption capacities of 79.21â¯mg/g at 25â¯Â°C. It mainly was ascribed to the existence of metallic iron in the obtained fibers. Meanwhile, the FeNX contents in the fibers were extremely beneficial to the adsorbent recovery.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Yaofang Zhang, Lu Gao, Nanping Deng, Ming Ya, Hongsheng He, Weimin Kang, Bowen Cheng,